Credit: IGN Marvel star Paul Bettany has said the cast of Avengers: Infinity War only discovered the movie's heart-breaking ending as it was shot, and their beloved MCU characters were turned to dust.

It began with 2008’s “Iron Man,” a film that introduced the world to Robert Downey Jr.’s Tony Stark with the hint that he could be part of something greater. Over 30 films later, the story of the ...